I've also hacked up a bunch of open source projects (wordpress, joomla). No tests, so you never know what you've fucked up, and you spend more time checking for regressions than actually adding that one feature you want. That's not how you do large scale software development, that's how you add pack on billable hours by charging your client for the same work 100 times.
Really, it's boils down to taste more than anything else. I've yet to see a tasteful application written in PHP.
If I were to summarize it with one anti-pattern, it's that PHP encourages people to mix unrelated parts of the program into one place, making testing, maintenance, and understanding nearly impossible. I should be able to test your app's interface without having a database. I should be able to write a database query without reading any code that touches HTML. And it's something I never see in PHP code.
So the answer is No, you don't have any experience with professional PHP, and you haven't used it in more than half a decade. Could have just said that.
Really, you judge PHP off of Wordpress and Joomla?
Haha, you are actually the problem you complain about.
Half assed "developers" who try to build anything large scale with WP or Joomla, people who can't be bothered to keep up with the changes that happened in the past 5-10 years but still complain about how shitty everything is.
